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How do I change column default value in PostgreSQL?
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'SET' is forgotten
ALTER TABLE ONLY users ALTER COLUMN lang SET DEFAULT 'en_GB';
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Scala: join an iterable of strings
...ariant exists in which you can specify a prefix and suffix too.
See here for an implementation using foldLeft, which is much more verbose, but perhaps worth looking at for education's sake.
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Multiple columns index when using the declarative ORM extension of sqlalchemy
According to the documentation and the comments in the sqlalchemy.Column class, we should use the class sqlalchemy.schema.Index to specify an index that contains multiple columns.
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Is it possible to assign numeric value to an enum in Java?
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You cannot use enum constructor in code. EXIT_CODE.A and EXIT_CODE.B are the only instances that will ever exist.
– Bhesh Gurung
Apr 17 '14 at 18:40
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Can an abstract class have a constructor?
Can an abstract class have a constructor?
22 Answers
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Can I add comments to a pip requirements file?
I'd like to add comments for a few packages in a pip requirements file. (Just to explain why that package is on the list.) Can I do this?
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Git says “Warning: Permanently added to the list of known hosts”
Every time I use git to interact with a remote, such as when pulling or pushing, I am shown the following message:
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Precedence and bitmask operations
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Seems to me that PHP has strnage operator precedence overall.
– Alvin Wong
Feb 24 '14 at 10:11
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How can I find the location of origin/master in git, and how do I change it?
... recently moved a Rails project from Subversion to Git. I followed the tutorial here: http://www.simplisticcomplexity.com/2008/03/05/cleanly-migrate-your-subversion-repository-to-a-git-repository/
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how to File.listFiles in alphabetical order?
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The listFiles method, with or without a filter does not guarantee any order.
It does, however, return an array, which you can sort with Arrays.sort().
File[] files = XMLDirectory.listFiles(filter_xml_files);
Arrays.sort(files);
for(File _xml_file : f...